Android编程实现webview将网页打包成apk的方法

public class MainActivity extends Activity {  private WebView webview;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    webview = (WebView) findViewById(R.id.webview);    //设置WebView属性，能够执行Javascript脚本    WebSettings webSettings= webview.getSettings(); // webView: 类WebView的实例    webSettings.setJavaScriptEnabled(true);    webSettings.setSupportZoom(true);    //设置默认缩放方式尺寸是far    webSettings.setDefaultZoom(WebSettings.ZoomDensity.FAR);    //设置出现缩放工具    webSettings.setBuiltInZoomControls(true);    webSettings .setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);    //加载需要显示的网页    webview.loadUrl("//www.VeVB.COm/");    //设置Web视图    webview.setWebViewClient(new HelloWebViewClient ());  }  @Override  //设置回退  //覆盖Activity类的onKeyDown(int keyCoder,KeyEvent event)方法  public boolean onKeyDown(int keyCode, KeyEvent event) {    if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {      webview.goBack(); //goBack()表示返回WebView的上一页面      return true;    }    return false;  }  //Web视图  private class HelloWebViewClient extends WebViewClient {    @Override    public boolean shouldOverrideUrlLoading(WebView view, String url) {      view.loadUrl(url);      return true;    }  }}